Locking device for sliding windows



- Dec. :19, 1922.

' J. B. DANDOIS. LOCKING DEVICE FOR SLIBING WINDOWS.

man FEB. 25, 1922.

Patented Bee 1%), i922.

n stares JEAN BAPTIST E'DANDOIS, OF BRUSSELS, BELGIUM.

LOCKING DEVICE FOR SLIDING \VINDOWS.

Application filed February 25, 192 21 Serial No. 539,061.

To aZZw/wmz't may concern.

Be it known that l". Jean Barrrsrn DAN- DOIS, a subject of the Kingof Belgium, 5 Rue de la Riviere, Brussels, Belgium, have invented new and useful Improvements in or Relating to Locking Devices for Sliding indows, of which the following is a specification.

This invention relates to locking devices for sliding windows, and more particularly frameless windows, and the principal object thereof is to provide a locking device which will ensure a perfect locking ot'the glass without'the risk of breaking it, by applying resilient pressure longitudinally on the lateral edgesof the glass throughout thewhole of its height, and transversely throughout the whole width, in any position 01 the glass.

A further object of the invention is to render possible afree release of the glass even when the packing at its guides is in a wet or dirty condition.

A further object of the invention is to provide a construction which may be easily and quickly mounted on any car whatever be the dimensions of: the glass.

A still further object of the invention is to make possible the immediate removal of the mechanism for the purposes of examination and adjustment and for replacing'the glass without necessitating the dismantling of any parts of the door, or intmrterence with the packing or with the lower pan'elot the said door.

To these ends the locking device according to this invention comprises a frame of the same width as the glass, constituted by two uprights rigidly connected together at their centres by a cross-bar on which is mounted a central mechanism with opposite horizontal sliding rods terminating each in a slide block or shoe engaging with a horizontal guide bracket secured to the upright oil? the door, the guide of the said -support being curved from the interior towards the exterior of the door.

Owing to thesaid curving oi the guides, the slide blocks or shoes, the mechanism to which they are secured, and the central crossbar of the frame carrying the said mechanism, well as the up ights of the said "frame, may be moved towards, or away from,

the plane oi the ledges oi the door by which the glass is guided. that is to say forced to am the said glass against the said ledges or to release it.

guides secured to each A construction of locking device according to the invention is illustratedby way of example in the accompanying drawing in whlch Figure 1 1s an elevation of the lnner face of a door provided with the locking device released in the halt-lowered position oi the glass.

Figure 2 is an elevation of the mechanism with a handle placed on the cross-bar 01" the movable frame, which by means of its uprights and its cross-bar, exercises a longitudinal and transverse pressure on the glass.

Figure 3 is a view similar to the preceding one, showing the sliding rods with the slide block or shoe of the said mechanism.

Figure l shows in plan the same rods, the shoes of which engage with bent or curved upright of the door, and, t I

Figure 5 is a plan of the fitting carrying the mechanism with a handle.

cured to the upper cross-bare or" thedoor. -A

resilient washer 7, preferably of rubber, is placed on each screw spindle (5 between the head and the fitting '0. Another washer g is provided on each screw-threaded rod or bolt between the fitting c and the cross-bar e. The space comprised between each upright a of the adjustable frame and a corresponding ledge h'provided on each upright z' of the door, forms a guide for the lateral edge of the glass window, 3

In the middle of the central cross bar 6 is secured the bracket j with a disc having a handle Z, the said disc being rotatable about the pivot pin m of the bracket j. The disc is is provided with two eccentric slots at n in which may slide the projections or fingers o, o, of the two nuts p p of two screwthreaded rods 9 g each of which is guided in a, bracket 1 secured to the cross-bar b.

The fingers 0, 0, are moreover guided in two horizontal rectilinear guides s, s, of the bracket 7'. v

Each rod 9 terminates in a sliding shoe or block t which is provided at the bottom with an oblique guide slot at for guiding the said block on the free end 12 of an arm w secured to the upright 71 of the door. This arm is horizontal, but its free end is benttowards the outside of the door.

The handle Z can be broughtinto the two end positions Z, Z where it is automatically locked by engaging with the notches .11 a)", of its guide 2 in the bracket (Figure The working of the device described is as follows:

By bringing the handle into the position Z, the rods 9 are pulled and moved towards each other owing to the action of the slots at of the disc L on the, projections or fingers o of the nuts p of the rods Q. The blocks or shoes on the ends of the said rods, slide on the arms to and move nearer to the plane of the ledges h of the door, owing to which the adjustable frame is moved nearer to the said ledges 7iand the glass 11 is pressed againstthe said ledges.

1 If on the contrary the handle Z is brought into the position Z the reverse movement of the rods 9 and the block or shoes 25 will take place, so that they will be moved away from the plane of-the ledges 72, and will a move the adjustable frame away from the plane of the said ledges so as to release the glass 3 v It must be understoodthat owing to the rubber washers f inserted between the littings e and the screw heads at, the pressure of the adjustable frame against the upper part of the glass y Wlll be a resilient one, since when pressed against the said glass,

the adjustable frame will bear on the said looseningthe nuts 3) on the rods 9, and by tightening or loosening the screws (Z owing to the resiliency of the washers 9.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be per-- formed, I declare that what I claim is l, A glass-locking device comprising an adjustable frame opposite the door ledges guiding the glass,characterized by the said frame being fi'eely suspended, with the in sertion of resilient washers, on the stems of two bolts secured to the upper cross-bar oi:

the door, and by a mechanism with a handle,

the arms simultaneously bringing them nearer to, or farther away from the plane of the ledges, of the glass, that is to say moving the frame nearer to or further away from the said ledges, so that the glass is locked or released.

2. In the device such as set forth in claim 1, a mechanism with a handle for bringing the rods with slide-blocks or shoes nearer together or further apart, which mechanism centric slots, in each of which engages the projection or finger of a nut screwed on the rods with slide-blocks, the said pro ection being guided in horizontal guides with which the bracket-support is pivoted, said support having a guide for the handle of the disc. I I

In witness whereof I aihx my signature.

J EAN BAPTISTE DANDOIS.

Witnesses E. MAIL,

F. G. ZABAT. 

